for both of us. >> reporter: they own about 30 american companies. executives maintain they are playing an important role in the u.s. >> we bought quite a few company out of bankruptcy and those company would have been closed if we didn't buy it. from that point of view, we are very proud in terms of saving american job. >> reporter: an expert on u.s./china relations says the next president will have to adopt policy to an evolving relationship. >> to a large extent the relationship between the u.s. and china is stable because it's so complicated. there are so many areas of interaction -- the trade relationship, the cultural exchanges. the practical relationship has to continue, and the economic and interactions will continue. >> reporter: as china's economic power grows, friction, as well as economic ties with the u.s. are bound to increase. whoever wins the presidential election will have to balance the tough talk with constructive action. >> earlier i spoke with susumu kojima, who has been following the u.s. election. susumu, obviously campaign tal